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P 3, 9 R. EGBERT 2,213,210

URETHRAL CATHETER Filed July 13, 1939 2 Sheets-Sheet 1 Inventor In. 1359?} M By 2mm and W 15m A iiorneys Sept. 3, 1940. R. EGBERT 2,213,210

URE'IHRAL CATHETER Filed July 13, 1939 2' Sheets-Sheet 2 Inventor 11:13am? M A tiomeys Sept. 3, 1 40- R. H. FLECKENSTEIN El AL IETHOD 0F PRECIPITATION Filed July 28, 1958 Raymond lif'iecirezzxfe b INVENTORS gArromyE 

